Adak, Alaska Tsunami Forecast Grids for MOST Model

Published by NOAA National Centers for Environmental Information | National Oceanic and Atmospheric Administration, Department of Commerce | Metadata Last Checked: December 18, 2025 | Last Modified: 2012-07-16T00:00:00.000+00:00

The Adak, Alaska Forecast Model Grids provides bathymetric data strictly for tsunami inundation modeling with the Method of Splitting Tsunami (MOST) model. MOST is a suite of numerical simulation codes capable of simulating three processes of tsunami evolution: generation, transoceanic propagation, and inundation of dry land. Tsunami waves are computationally propagated across a set of three nested grids (A, B, and C), each of which is successively finer in resolution, moving from offshore to onshore. Nearshore details are resolved to the point that model output can be directly compared with tide gauge observations and can provide estimates of wave arrival time, wave amplitude and simulation of wave inundation onto dry land. A Grid Resolution: 60 arc-sec, 90 arc-sec in x direction. 90 arc-sec, 105 arc-sec in y direction. B Grid Resolution: 13.3333 arc-sec in the x direction. 12 arc-sec, 20 arc-sec in the y direction. C Grid Resolution: 2 arc-sec in the x direction. 3 arc-sec, 4 arc-sec in the y direction.

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Earth Science > Oceans > Bathymetry/Seafloor Topography > Seafloor Topography Earth Science > Oceans > Bathymetry/Seafloor Topography > Bathymetry Earth Science > Oceans > Bathymetry/Seafloor Topography > Water Depth Earth Science > Land Surface > Topography > Terrain Elevation > Topographical Relief Maps Earth Science > Oceans > Coastal Processes > Coastal Elevation Models/Analyses > DEM > Digital Elevation Model ICSU-WDS > International Council for Science - World Data System 1 meter - < 30 meters < 1 meter Coastal Relief Gridded elevations Integrated bathymetry and topography DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce Continent > North America > United States of America > Alaska Vertical Location > Land Surface Vertical Location > Sea Floor Adak Adak Island Andreanof Islands Aleutian Islands 2012

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describedByType	application/octet-steam
identifier	gov.noaa.ngdc.mgg.dem:adak_forecastgrids_2012
issued	2012-07-16T00:00:00.000+00:00
language	[]
rights	otherRestrictions
spatial	-172.9208,50.95,-179.5,52.6

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